How many major anatomic variations of oesophageal atresia-tracheoesophageal fistula exist and can you describe these?
Five major anatomic variations exist; (1) proximal atresia with distal fistula: 85% (2) isolated oesophageal atresia: 8-9% (3) isolated fistula (H-type): 4-6% (4) double fistula with intervening atresia: 1-2% (5) proximal fistula with distal atresia: 1%
Gasless abdomen with no gas in the stomach or bowel loops.
Nasogastric tube in situ, with distal tip curled at the level of the thoracic inlet and no passage of the enteric tube distally.
Bilateral 11 ribs identified.
No associated cardiomegaly, vertebral abnormalities or abnormal pulmonary vascularity.